This superb collection of essays by Ray Bradbury gives you an unfettered view of his writing technique. Equal parts brainstorming/word association and playing "What If," Bradbury's method of getting words on the page is deceptively simple. Fortunately, Bradbury also goes into detail about how to stock your supply cupboard with people and images and emotions so when the time comes to use them (or they come out to be used), you'll have them at hand. While the book is more geared to the art of short story writing, the overarching theme of writing with gusto works for novelists as well.
Bradbury admits to using the reference to Eastern philosophy as a hook to get readers (those accepting of it as well as those indignant at the notion, yet curious enough to find out what he's talking about). Ultimately, Bradbury doesn't advocate switching from Western to Eastern thought, nor are koans sprinkled throughout the book, but he does address coming to a point where you can work without laboring and achieving a state where your words flow from you and through you effortlessly. In this way of becoming one with the universes of your creation, Bradbury is certainly a Master.
The one area where the book falls short, though, is in handling the revision and editing of your work. It's all well and good to talk of writing with verve and gusto (and it is well and it is good to do so), but Bradbury doesn't explain how to look at it after the fact objectively and with a critical eye. Granted, this isn't a how-to primer, but the enthusiasm of writing the story can be all too easily quashed by rejection notices if what is written well isn't well-written.
Nevertheless, Bradbury's message is inspirational, and if his method has worked for him for 50+ years there's no doubt it can be a successful technique. Even if you come away from the this book without being prepared to follow in his footsteps, you will still be inspired to be passionate about your work.